Realization of Electronically Controllable, Wide bandwidth Instrumentation Amplifier using single DVCCTA

In this research paper, a simple Instrumentation Amplifier (IA) which can operate in voltage and transadmittance modes employing a sole Differential Voltage Current Conveyor Transconductance Amplifier (DVCCTA) with only one grounded resistor is presented. Both the modes are concurrently given within the same circuit topology and also avails the feature of IC integration. In addition, the proposed topologies provide a wide range of differential gain bandwidth and CMRR bandwidth of about (1.05 GHz, 17.286 MHz) for transadmittance mode, (1.02GHz, 17.286 MHz) for voltage mode respectively. Furthermore, the proposed design has an appealing feature of electronic tuning of differential gains via bias current (IB). CMOS based DVCCTA is used to authenticate the workableness of the proposed designs through PSPICE with 0.18 μm TSMC CMOS technology parameter. The performance of the proposed topologies is evaluated in terms of non-ideal analysis, Monte Carlo simulations and temperature dependent variations. The simulated responses correlate with the theoretical prediction.